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Finding the Fourth Proportional to 140,447.28, 210,628.08 and 73,851.28

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Solution

The fourth proportional to 140,447.28, 210,628.08 and 73,851.28 is: 110,754.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,447.28 : 210,628.08 = 73,851.28 : x
  2. Step 2: Convert to fraction form
    140,447.28/210,628.08 = 73,851.28/x
  3. Step 3: Cross multiply
    140,447.28x = 210,628.08 × 73,851.28
  4. Step 4: Simplify right side
    140,447.28x = 15,555,153,311.94
  5. Step 5: Solve for x
    x = 15,555,153,311.94/140,447.28
  6. Step 6: Final answer
    x = 110,754.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.